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Subject: Re: 32.7 Khz Crystal oscillator circuit help wanted
Date: Tue, 24 Sep 2002 18:25:49 +0100
NNTP-Posting-Date: 24 Sep 2002 17:25:47 GMT
X-Newsreader: Microsoft Outlook Express 5.50.4807.1700
Are there any good books on desigining crystal oscillators?
"Tim Shoppa" wrote in message
> "MNQ" wrote in message
> > Hi All
> > Im looking for a good website that will show me how to design a 32.7 Khz
> > oscillator. The circuit I have built oscillates at many MHz and I think
> > my resistor and cap. values being screwed up.
> > I am using an inverter from a CPLD if this helps.
> I don't think your problem is the resistor and capacitor. If you use
> a buffered inverter, what you usually end up making is a RC oscillator
> that ignores the value of the crystal.
> I started a thread less than a month ago on this subject and got some
> good advice; see
> The concensus was that you won't be able to get a good oscillator
> using gates
> from your CPLD, you really want an unbuffered inverter.
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